{
  "manageEntity": {
    "action": "Save",
    "entityId": "65025527",
    "entityType": "Track",
    "nonce": "0xca685d7f9d9362bbc08f3b8d25eadc1f4f1a9f7df443fbbb05ed1851031fbabb",
    "signature": "0x9633033474fc04343a3a605fe9c5049c6fca8f7fc5cdcabe7606ed711a1a527d673f93ab3022c8fbe1361af065f0428d5736e284daed103e4e97f5a536e9da3f1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}