{
  "manageEntity": {
    "action": "Save",
    "entityId": "635663890",
    "entityType": "Track",
    "nonce": "0x1d5887e11d48019b01e10a976eff9b77081392e3f28869ac64de730b9a9209da",
    "signature": "0x411b44c3539114d700bd1c22d80f93bf451009642503bcb2c9b39be7967cd77138b2b64395bc3e6eb7ebdd1034d1709c807361a2280989f8443b8dd1f5310b981c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}