{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105504",
    "entityType": "User",
    "nonce": "0x8194cf0c8687eee30d7aadd6b4d83ec521610ce716cc751a161bc3ae4cc03eb5",
    "signature": "0x1ccad7ab35d3a8b8ad1304e6cf5307ec8380766dd92164b9ac84ce53c9f454080d326072e8b82cbc39bbb11dfbfa5466539b1188679ab4cb07f71b180a88b98b1c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}