{
  "manageEntity": {
    "action": "Save",
    "entityId": "283386247",
    "entityType": "Track",
    "nonce": "0xe7bdd28574b8ea67878126ea7e789b17d510c37bb9f8d870ef36cb28e926f06f",
    "signature": "0xfe6b93c3c8af0b0706993ad71d1af86d26470a2f8f72dbddf3c13664cfa04ad1774eeef386ca39e11f3cc0d82b490b797541d7727294bde866501bd6f6c3c9681c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}