{
  "manageEntity": {
    "action": "Save",
    "entityId": "284831509",
    "entityType": "Track",
    "nonce": "0x446b94c3db8dd29370984c04541292fe3404d541e4b78751fe9647979a99dad4",
    "signature": "0x4948b53ea5ba2d439642fc0edd2ec509fe432ee0504ffef2acbf64c9e5849ad841604420e58568db1a811960373b5114d239bf0372cd9aa741fbf9b4498c7f711b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}