{
  "manageEntity": {
    "action": "Update",
    "entityId": "553152525",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0fda5657a884acc1b828bef7d0236bab7843ec28eb499c1efe1365ef21f6b708",
    "signature": "0x18c99c411725435f90fdba98fee4e47c64a4840b69fdd23ba4241396c8c83a8347b8ee5148436023f42f4843e90848b7687ce6741fe23f4a9fb5876556d49a881b",
    "signer": "0x1D8cB3Ecc9Cd7e23dC2aa1E1A07F64363Ee9599E",
    "userId": "553152525"
  }
}