{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991751",
    "entityType": "User",
    "nonce": "0x019d123ae8a3a51df589af5a568321e9390f4929ac97eb04a161188293e656e0",
    "signature": "0x40d11d913c4db7da3be048a4abf179b6f7e26976ab63991f4529b93da6ac93406f3f9e45a8e6f4a69e5388b00a366b29bcea6751d770fa292d51471bea33bd931c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}