{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2917744bd21a2143566e4d60f86c8e8a3851a1a1f402c89715359704efe2087c",
    "signature": "0x532d49cccb3e7fa550a20ca6584fcbd83f128e17906dd8f1b4dd944def6e2150256b25c0829be56b33f3f7e9d0041dc54f1ff55cdf14dfc8f7d109eb4be1bc681b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}