{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xecfaf0cc21c19f01cc88c32ce8e151dbc276be883c710d00291f07cbac490e01",
    "signature": "0x22e9e50e18f35bb0987baa2c0813f22121dadfbbd15e0530c90bba492105fa54069b6de77363b533cd526feaddda635834e615a44ea07ae006ab86822e0553f71b",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}