{
  "manageEntity": {
    "action": "Update",
    "entityId": "357213672",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x743ce4e3095d672424c95b8750e459012a588d0fc8ae1db9a3174b98317a2905",
    "signature": "0x17e1aefc0bea98e48b0b86c4f7f28cdaa1e9d4c0102da96ed26fac34506a1e2f535ff6a8c31d742d870a591800aeebde83b6dec9f9a47c228b73fb57830e83241b",
    "signer": "0xa3057aF73102b25DCac3840DbCeBaFd42e2C63Ff",
    "userId": "357213672"
  }
}