{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b85b665b1559abe3a8908eebc9d51458ec7ebc59d777091f6407dca7a186b0e",
    "signature": "0x73052a37757bae33267563e2f437a2335a71a2e5d844d0bc0388c2a4e4144ae20e6c14f972bd5ed74741b5f3f3da8804a78beb35c00c55842025715a69f91c251c",
    "signer": "0x39788E2D020D54760872178Cea0d5AF12732F02D",
    "userId": "720903941"
  }
}