{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x1a284124a92734106c881ab8677b45fc03a226adc9f0a1b6638c4fbf72fc8fd5",
    "signature": "0x3898d40cb8c6fd363a5f7e3350ba9d2be43177e2b91d240bcbe942260393da854fc73fd86559910586f0550b5f7e10eec050be675b51825d1a8a56a47f7b19601b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}