{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbacc164382d5ccb337c8eaedc0dd3e7bda724c9e6569d46be59e1b4a54366e0d",
    "signature": "0x728a885160c7b00e71dfd45380967eb324489234adbc389ee43c3aa741c126fb7ca36bd691bb2af578f0775b3bcbb833719eb83bd1251d1b4a247c0b6d1323ce1b",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}