{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4c7ce293cc00ee8ac8699f08d78e9c7ac60156bfafaa8b011f816bdcde50f072",
    "signature": "0x6319113ceebd56c70b15db5fd7c8fe9de5274f5bccb55afd5f1bcaba98bf7fa856936e3d8d3e5ca1ac0f2f3e163744d20c104657b695bcb83c553607eb9bf6851b",
    "signer": "0x4FFEe482f9b3AB59D65B95beBd8ab05c11ed0f67",
    "userId": "463353146"
  }
}