{
  "manageEntity": {
    "action": "Update",
    "entityId": "952196459",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2000016c8b7bcc525a024c9783bf9938622592482f2ffaba924ef101c1cd3c1a",
    "signature": "0xb4b1e4edd2c0115930f8ff18ec79c332047b1e7144764fd5d87651830393f0da7aaf71ebd5fd1adde5efc759b35ca02989c49d765be87a1c9e91e329d0c740651c",
    "signer": "0x89715A6F0c23C84cE71166083899D25bE26BfBC1",
    "userId": "952196459"
  }
}