{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x3a4f058360d55ddbf48293bfd1ec0683bed231776db9874d5466da2c07db3502",
    "signature": "0x13a809fabe40f75ab51955cc94b85e8f14c2a48c4eec4bb0debc67bbecd9496967a3c97c4fe29ce8b510500bdca8fd58acad50862a00bb8591983067e6e2d0c11b",
    "signer": "0x95D5f6d03FD9e6Ae11F25Fe683EcA6fC4c0EF026",
    "userId": "689008688"
  }
}