{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309585650",
    "entityType": "Track",
    "nonce": "0x24d76fd15f0c83f8d15a3f0e005b3217e6ad6429ecf346fe59fab55d40b10fd6",
    "signature": "0xe64c67e000a0adfdf1e28fdba4c72504c431a3e2029e17315e2de45ae101c6fc2c373a396e70cae2f58d2b095595a3b31ea19a4b473e74c9cfff607eea896db51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}