{
  "manageEntity": {
    "action": "Save",
    "entityId": "318220059",
    "entityType": "Track",
    "nonce": "0x611a9557d158288496ae93f5fe20bef391876ea6433db82bca03afcd893e1ef8",
    "signature": "0x0947ba53229e0b69cf9fd02b2ed7a042787d5379604997c4f56a95fac8e9df2f273bb52d34c6d05f88cc2c104e4acb18eff1308bae3a92f2b0325c85318f35051c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}