{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064209",
    "entityType": "Track",
    "nonce": "0x9b414bddc0770451cbbed19aa30a9de71596333643839c26010ee20a2f2cab57",
    "signature": "0x2d0c38682f392c5ea32ea4dd20f6a42cd5ed32e80f32e68c0b843d4c96b6a42d095006f3a5e066a2d19f3a8129ae78ee6b4ea3d838f6027026b7bb3b41c96cf11c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}