{
  "manageEntity": {
    "action": "Save",
    "entityId": "231053869",
    "entityType": "Track",
    "nonce": "0xdaf84483ee1271434cb6f83dffbdf0e7afcbef30a74e2723556ea16b63fcfc48",
    "signature": "0x9005e18a9ae958d03e9e27f7c93dd78ca1ed3cd10667f3a4a0c789ea2fba487309972d87b7ae94dace52f69ce33d3613086dfde18b35cfc26c7dbd6fe783871d1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}