{
  "manageEntity": {
    "action": "Save",
    "entityId": "2053408809",
    "entityType": "Track",
    "nonce": "0x9d871bcc3fcf283755dc9bf6aead9b524dbd205cecae8d4d2a0fda23c62de60d",
    "signature": "0x2533058b5ebc22489fd484794ecfc5e3c0255a6b36df03eb47d1ae76fcb5ec3f21a6be89c20fa42c4b50f21df718f65cd967aa5dde01e329b74f20d2568499e91b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}