{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "441558",
    "entityType": "User",
    "nonce": "0x9fff03e44ed89af2a48dab73d66624005627493c20dded2dbcf9d69e406a0460",
    "signature": "0xa466cf6f18aad209b8218997a8eec2a0e97d1d1febb51347e016f3401a42a1836f6ccd5b770eba7d9ca3c3489d4df84a7644666f55fbe1c7c8c1ff34508274801b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}