{
  "manageEntity": {
    "action": "Update",
    "entityId": "316899709",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7098fada85815becea0843a77ca65c71b48e1d6f05952ea3652e3b64f6157d61",
    "signature": "0x44e8c80c19223e0b096e03e957e7e49c588da00026d01c314dd8c913707ce6c275f9130aac74cbd44cc9d7834888b42e25bac3c22b92028d687b0b594d24ca171c",
    "signer": "0x3907a700a91FBcE5b24D6B136658B36C50F3AB87",
    "userId": "316899709"
  }
}