{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393889489",
    "entityType": "User",
    "nonce": "0x557b2a8b4e77c99390f9df93dee29da854513e686a6103fd0217669e27bc21a3",
    "signature": "0x88687c56149f2a2aae6746b95a343d51ec2749d36fa79bc0e47e0cfa60f82f0c0b17a84379504e4d88c82b9f2ac394662093cecb3950b9b26551806be237cc231b",
    "signer": "0x8d9D00A94c3B1C9992e3CA4386AbBC6345B2E876",
    "userId": "396658415"
  }
}