{
  "manageEntity": {
    "action": "Save",
    "entityId": "227145366",
    "entityType": "Track",
    "nonce": "0xed32af7cca673963fae2e9d1d5370c3536211806e199cd0534f6e43a519802f3",
    "signature": "0xa682c7a49695dd69aeab35b2dd5ad7ce9d62c23084f31ac149678810bbe9a31c00cfdb432c2a0095beec80c7c17c1fd8362ccaed52b6eed0b4f0e4bda5985d041b",
    "signer": "0xFA30F01c1d91A9d53bf670AC66212774B9cf6695",
    "userId": "612024327"
  }
}