{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x9fc21a9e9e3bbd1ce43f605b1662dac5102cf1be5c5d41842664e75c2879bc09",
    "signature": "0xd35dd076c4f793ef945ba809c58f1312050677d79588860dea0979e3385bf6c46e24ca7dbf52a431ac41b29c5599cc7e58e84666bc55c0db02026da5e13fa22c1c",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}