{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x4e2eebb0dd0500f7c3925094fb1269675c79b826b6ed548252010c89e8024bc1",
    "signature": "0xd41bdc52dafcc65b12e120da3b1d763bba43b88f8497c6c1faa8ce1cd5f001ac0ef2822032c30d5d3a6fb33f8c2d33e8be3822a3a4364c28a867d4eb6d9444701b",
    "signer": "0x0Eb68d1ceacF37AbB0D48503E66b8fF2c06E2fdE",
    "userId": "747576419"
  }
}