{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111470888",
    "entityType": "Track",
    "nonce": "0x44c38e6c5934bccc24f1e734d87321dbd6c0d029508c4aece574b6630e82a3bc",
    "signature": "0x3f3188a4d8d98fae9768e42bdce5a5bd44b8027860085c4b181dc212fdd1ba94533a26c234d0664b3de6e207b4201bdbf37d87603ba4d1f4ee73517e40504ff61c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}