{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113188086",
    "entityType": "Track",
    "nonce": "0x0287ddf4e4c9b0ad762af913a2d605240dc2e81f239b624e5506aae5c319f313",
    "signature": "0xf2d6e8a70dad93713d9f26ac9fdceed047c0020d0dd2f21c0957859526093fe27e873ac3079917a252adcf6f54f8b0e846c464beabd23847d70db1d0e6672b9e1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}