{
  "manageEntity": {
    "action": "Update",
    "entityId": "30403219",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralp5cit4mmqsvks44n5ddh2jp4uaefaltvw7ewv4s45m6tqc4dfdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1400989188},{\"type\":\"playlist\",\"playlist_id\":718189979}]}}}",
    "nonce": "0x215efc6998d518be0514f0f99a35fa108e6c3e783ba87022418ac6daf86b3032",
    "signature": "0xa62cc20ec8c653215e8b4fd219027a31174e135a826119da8d16c05ec77c92fd3887f8aad206c68e97cdf9d6a19db07323cc9e5583e4571db5dc163e5345d7d51c",
    "signer": "0xE5439a0580b68F2058cCbdB27461859c63B3C9C1",
    "userId": "30403219"
  }
}