{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53273933",
    "entityType": "User",
    "nonce": "0x428c8bcf0d687b7fb8befcbd625217a404943925d97a3ff148e16b7ca9dddd2b",
    "signature": "0xb4d36ba21c6214012d8509446d08f123b429e3bf231cdb5f16c5a95c8cbb8dd04d405a19217e2fb47001f5ef5f30f38b6162e8dfd96ac4101ef591e8fa4d8b4d1c",
    "signer": "0x80a0405FB3B9d86d11d9837558C400BE65BE42a4",
    "userId": "464100900"
  }
}