{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ed5d5ab53701b04e8c7b03e89fa67a100efede6943becfa9cb2044329ac9d99",
    "signature": "0x8f9d821b48465cd71691095684de31171c59cc54def3f63572b9a1f7d74c6f9f25ae8fe87bfa5388d9baf1b282cda312bad37bb12c7565bc4f7ee0112fa306191b",
    "signer": "0x78d41F673077E9B3Fed7bDccB987ae15D22beDFE",
    "userId": "850956187"
  }
}