{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x80d3e9d221bb1d4c6d4d1a02e9faea1c6c336234141730ba45e0a3425aae32c6",
    "signature": "0xa83e50bf3e060eb496c968ad5246d8442dc4aaafc60be9088307b85bfdcdfadf4186d6802a371ba3e36d966ba49592f3e48fb8511fbb695462bb38e6335456811b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}