{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x0a80b9a99dbd7f6f31264c9a2285778674cd2138d12b49fe04d7628eb6553bcf",
    "signature": "0x696d4e7f5a3448312951276cc02f3d738c690439f6f56810bb5b7cacf049da47686e8f5214206a40f2c7afa6357fe6f85fc34b2a73bcd3a99c71f6858e9559051c",
    "signer": "0xd9Fa1ac44597D750006BCEd68B36a63Afa62AEfC",
    "userId": "221168944"
  }
}