{
  "manageEntity": {
    "action": "Save",
    "entityId": "483542491",
    "entityType": "Track",
    "nonce": "0x8ebb23ae88dd3c538d8a7f4c343b3f9b69eed61301f998c2dbaf10bdf5736c95",
    "signature": "0x38301395b313a01ccee635772145ba19cf99dc07b7a417879e782405897871cd7ea3116e09d5748ecb2f8cd798b8797d5b94932d8d6970bcf892f8772ae00cc81c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}