{
  "manageEntity": {
    "action": "Save",
    "entityId": "1834641839",
    "entityType": "Track",
    "nonce": "0xf1f53295f2a582458d7ea2b5b6a047a3f39614ecfd2706d3b2d7239b1e20b937",
    "signature": "0x3d0c9a0fc34d9c272dc9d08f666f1aeb0b70d31d49e326a80ed063f6cd5d8d8b713272415da8eaa4c5dbeababaacc21b8e3dd1b86a3198f68b032bc417d71a301b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}