{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4544",
    "entityType": "User",
    "nonce": "0x3a7cd5873051a53ce6b44dc4faf9aca15217bed9432cbef2b8a2b3c9074bc92d",
    "signature": "0x0212714c2609b94c3f1f4e1b5f1c5203f6f441179c4dafe4dccc147290d9e5634adac0d33a1b2a38ed772f32f563e15a514040720ba83c20ce9fb636519837951c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}