{
  "manageEntity": {
    "action": "Save",
    "entityId": "1152670235",
    "entityType": "Track",
    "nonce": "0xe3f9d933c3ee5ec762b5adba386863173328681ce22df4021bc8ef7bc986d076",
    "signature": "0x0479b907b757ae5989442dcd2aae492f1b89b1c047111d1dcce95bd275032bde284c32769c9ab858c51b5d45bafecc01baa06b8aa932a939859c1cc8a75400381c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}