{
  "manageEntity": {
    "action": "Update",
    "entityId": "18198663",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6a42aec044b1309591ac074f6ace912ed485b5fb9a0059388327b443faf16d79",
    "signature": "0xf514ceccf6252715fef84ca80aacf8568ee142e9a02c8f92d29f93f68eca53061307fa1ceb554607920feeb6ca506c4b4d447dce0b52cc84c25e4e6ac849f5e41c",
    "signer": "0x883B776E8D7a14972084D8BAeaeDFD50d18870EA",
    "userId": "18198663"
  }
}