{
  "manageEntity": {
    "action": "Save",
    "entityId": "1966613536",
    "entityType": "Track",
    "nonce": "0x090467cd56d41ca3a79438a20c7ac9cc313853fb3dc1393d84ca9254de52eb92",
    "signature": "0x4d5add45e09f7c2730c2a725c356b408dc1864b8eb1dbfc5a15a9c7f73100d6149c1f6cc484ccf7d0cdcffc9ec9f498b9607d2157c7b0d58f6874619d7b851111c",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}