{
  "manageEntity": {
    "action": "Save",
    "entityId": "682855165",
    "entityType": "Track",
    "nonce": "0xaf2f3bc9d1fb0110de754eac427f60ea5143994c4a5e9e7f51bc0bf927e81c4a",
    "signature": "0x0f4a1e768c82ebdfd18c9ebd594febd7467ba8e7ec30c96f0f767f98968e253e26c3e9bd94f65a250b18b4ce6ed26cbb6edfa986a9c5610ccd9f8111296b63b81b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}