{
  "manageEntity": {
    "action": "Save",
    "entityId": "270127111",
    "entityType": "Track",
    "nonce": "0xa23eeabcaa4592c97708f663ea2498511671d6d71e37649dc1cfded86b020f42",
    "signature": "0xdec36c83d2dcfbedb82ca1d0600c475261c22697088f41a3285ca1a1c46badd825e1406d75f5b43d36d8fcbb9830922b63c3dc055e332001cd00e8cdd52778c31b",
    "signer": "0x91604A34364dd188aa0f1B640414e9cc81023ae4",
    "userId": "68274155"
  }
}