{
  "manageEntity": {
    "action": "Save",
    "entityId": "108854",
    "entityType": "Track",
    "nonce": "0x0be12c9f8ea3a211088c1fb111f54b94c151b8b351ef115ff2bcfc817eb5f65e",
    "signature": "0xe8803dc3914828a6138a7c5d520dd404b85cdc02daf7addb642cb2fadbf66dbc33ee910aca037fdc224d8e37c761c07dfcb9f2968baef95cb84f9860108175291c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}