{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "572163542",
    "entityType": "User",
    "nonce": "0x42e17577fa75996257449e1087576b88ad3cdbc04581b2445d6f2835cf1cd307",
    "signature": "0xa4d1aca9aabcb403026d919ecd1c18c08673babd21f64c1923d89a108a2017745843a67e20c48ddb525e4be9aa2c4ce78b2ca4cc1fa286732e9c6aed779fcd861c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}