{
  "manageEntity": {
    "action": "Save",
    "entityId": "43993009",
    "entityType": "Track",
    "nonce": "0xb33d1af18a85663e690881e4c2a9eac3ef407da32319a8882e660ea0862edbef",
    "signature": "0xb9c146eed459d17d47efec85942465c8ba6ff9fc9bc5280676a460a33111664919bc0dcd298df6a8093de305a093f5f898989c56ba722695b54a413bb52c38df1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}