{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x8a56a5e3bb1e6c6386b5accb9b405be0bdffd91f9d29c765d5dd5143010bf93f",
    "signature": "0x01ecbca81170f51416a04798d611b1899eb490241aaa31e3a515fd1787feb47328b4fab76c823a721f765e0db83395776976c6e0ba4c9496f1090142c714d3421c",
    "signer": "0x5D040c7e172B07431383B4bd6Fdd84ed67B8Ba0f",
    "userId": "508547804"
  }
}