{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41804",
    "entityType": "User",
    "nonce": "0xed5e0f2dcd2cbe39a2288181d6013a90b0a22f2f4a0caf6111ff50e8bbfcf4d8",
    "signature": "0xd350336eed55635671b2f5d7ad7201f4e730ee4c39e38ceb6b05e38fac3ee7720e8dd5f45a63054fe73f2cee6852baada340655d98a61e684af463ff69afe9471c",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}