{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "458118601",
    "entityType": "User",
    "nonce": "0x3951bc005eeaca1030fb685a44ff71a8661c75e0e7715d416abb2470d8da614a",
    "signature": "0xbe574807965d098ec48e5b36677df3e00c4a26b5fd535fdb715c24ec1ac547171a5b9bb639eefc24acd4ef4c8ae7861ebcf9a527757f526580c1e0bcf2e45ee11b",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}