{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027037451",
    "entityType": "Track",
    "nonce": "0x8122b49373a863cd9c9795919482ede11f7b0a560a7b59d3e9264cb4488b90df",
    "signature": "0x31d3b3a0c67394601b375ee7346efaffbcb0c590b7f5e606da433bb11aa8798e1e2c6cbc6730b4e00104c77ae871b298ff7b3e8843d5ea723f2506b6c5b8e8711b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}