{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0xb90e9fef1ca2b31caa819f8d1b5914b107f246cf9bc3f553b832fb4d48f1c6d2",
    "signature": "0x275a847b4e238e3e4d98900e1ee6956bf09ff58134a33431b8ed2244b6d20f1344b53a8ba4c0349660037911c83f5e1744cba09103041e6e67d91c17a6e658e01c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}