{
  "manageEntity": {
    "action": "Save",
    "entityId": "2077954981",
    "entityType": "Track",
    "nonce": "0xc825e31c7e45e5a5937c013b36a7bd60a3682cf065ce78ad265f1102c11b50cc",
    "signature": "0xc9b28a170df51861e6055378fc9082fcf69c04060c79b536eb44da6c5e9ac05b46f46edfab57edc525d2ba3baeb05722f81f57fdb5f81b56cca70e9a981383901b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}