{
  "manageEntity": {
    "action": "Update",
    "entityId": "753512880",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa661e6c1b1916add57b84d077891812c6e545feff6e29998f65bfab181a63c11",
    "signature": "0x46a9dcdb012a3adc11f1dba3b16303baf7fa098dbdefab1d551f815c8f797ed46703c1a05bcff35498afb32d7bdda60a0e5a44369530a3f5a5d45d40fe85c47a1c",
    "signer": "0x93F44f85F6F59D8304b5CC88A904E87175a6d2a2",
    "userId": "753512880"
  }
}