{
  "manageEntity": {
    "action": "Save",
    "entityId": "711363",
    "entityType": "Track",
    "nonce": "0xbeff1de6be79daa972d3993031f8a8e3cce7892d5d6bf78da5d0c4896923fdd5",
    "signature": "0xa4520896427980734f09c37bfd2f68ae9e241633b492414ac5327d6446cd95156c24e9bf2c5143c825cd907bbdf517cecfe2f465d1a5fd5084f9e4db98ff4cb51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}