{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6a6260e8f67fff1963babfa624037000970374158c5d8c2ce2b6d7e2d3a1d36c",
    "signature": "0xaa0fb5151f1802d61b422a0d17e21dd5f296ea761824b3efd6e88b308bae8e321ce5eb19ba6b1491ca3de36dd37246d00ffefb4a87bace45b4d308ed1a57e0b21b",
    "signer": "0x25E3C51f72Fb7d4734725DC533199253F7dc7801",
    "userId": "619339589"
  }
}