{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257157",
    "entityType": "User",
    "nonce": "0xa7a711d6e804910cef942d07cbf5339c54c9919f8d488cb68e235b5263b240ce",
    "signature": "0x5b89aa1b189d6b4d6dd9fe95fdcf7a62ac9d50d9a0ad8c7abf5b58340799f7a4675b94482b91f993c6612f21f133a2515f8cc200204dad2234e8c34de4d028ee1c",
    "signer": "0x7ba9b0B258d63c763824A1Df58130E21A72D76b8",
    "userId": "300264033"
  }
}