{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0xb449d7e2fffbaa109dd9735610c5dba500d0bfbf16d8019ee565497a49dca140",
    "signature": "0x2914a79a09a9dfe7a4b5af605ff811171669787175bdc0b51ae790c680100a3f2698529b18167b0a8291d39ac6710ca1480aa026fcf83a99324679631a74f64d1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}