{
  "manageEntity": {
    "action": "Update",
    "entityId": "970316950",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02570119cd35169d538d3c67a5f2cf1796d66b59aa725113368adedfe453b89a",
    "signature": "0xb9ad6ffc8a0ac7d0bf5dd74785e9ed9cfe6bf19d6673b89b167950181dee982547a97fc2db26b2ea4e56ff4f285cbaf7a2ea51e3311c98c0a587ef67c2a3cce81b",
    "signer": "0x5643DA6C36cb4e0D3b1cBd1e78312deaFfc3894f",
    "userId": "970316950"
  }
}