{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xf39c43ca5140d65565c4e2d37a7e12335b0caf5713be367cdfbfe7e0b7323653",
    "signature": "0x5caa54a9eeeed3436eec24592605f6047ed83b90046a9b1422321afa755230e00053bf76ed41839f868252f2e5605d35fa8c63d9769134040aa22c85fb1bc8341c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}