{
  "manageEntity": {
    "action": "Save",
    "entityId": "1144626105",
    "entityType": "Track",
    "nonce": "0x11de837f58b4293f3cca3bcc66e70818d0d6aacdc47c8ca6c1f63a533a989387",
    "signature": "0xf5bcec27e617e5ad8ef2eed7b36254d094bebff697e9901dd6a9e3d4fe76b02231d77eb0f3537e135e52a1a7439228e5371c2f6dd853731c31d41a78d04392261c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}