{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd5a9690a88c8751a282338a63479d2daa7af0390cfaf04fd3625c3cd08ab0e1a",
    "signature": "0x205d50e79c7dbb0dfe887ce8877d9070d5d7e45b76329a131fe579ce75124bbe14cda9137af05c0e7a30bf09974b171339686d729d87eb494d43f1fc490ce6621c",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}