{
  "manageEntity": {
    "action": "Save",
    "entityId": "46296",
    "entityType": "Track",
    "nonce": "0x2afd0af9ff171e11246332ab51faf5800fceefee177e020de822f38f40f6846b",
    "signature": "0xa0ca460a3ecf9882b21cbfe986ab295ffe46b62264aebb8b98a11294e53160584b691e37169eca021f45fd94c2845133f50a735d7b56d7abdee09dc1cc2526bd1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}