{
  "manageEntity": {
    "action": "Update",
    "entityId": "903597781",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8c98deb94148e48a07c10cebbcc56d4eb2ffe1a721d556f5d654e804d5e54d31",
    "signature": "0x457a5cd5259d976b57577078c6664c7169bad0842622a0c2472f3b11ba7f33e8017e0cfcefbd55941aa9b742118a7ae7fcf03ef1f8a1db6ba616c469b7f010b01c",
    "signer": "0xb0F002ECbB1Dd492994A3Cb8F63B1103087Cd809",
    "userId": "903597781"
  }
}