{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756544",
    "entityType": "User",
    "nonce": "0x7c3f2b9eedc186c76e25b77eb2e74d706778ca87a8f8e2239c105ed5c1b268c6",
    "signature": "0x1da1afe70e18aa4215aa735049c3beefeb7537ea9be86e91bbe7a5286e8edef71a985b8a9f405ce1d0aa03cf9ef08d90bd1a0c10787a6a62caf0b6af2b1c6ca71b",
    "signer": "0x8de50A40f3EDd9695e3a1fbA5e43C25CA9fF74A0",
    "userId": "156945132"
  }
}