{
  "manageEntity": {
    "action": "Save",
    "entityId": "1838203758",
    "entityType": "Track",
    "nonce": "0xc996abcd66ced8d11ed13e48965043ec010893652e1a71123221f3d97da30639",
    "signature": "0x67ea6c33e8676ea0344157ec71019a237507e07511c7b615f02c34c426ad7fb655ea9ca70c82615dd4e81937a74610bf5560b5a2c4df90da473c05b325ede33a1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}