{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xd8266c53873ea55c26b24974547128fc4cac266522911ddd6c042c9fa8193981",
    "signature": "0x507d2fb852a1b67ad0282666ea05a3c563dcba33d34060c3e77899b1244235247eb522ab1716cf5aa52c44dbad84f943be0713ea4fe300a1250fe60f3984b7471c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}