{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "668",
    "entityType": "User",
    "nonce": "0x09557b983c55dc29292d9dacbc82c058fbdd40beefa9c710752864a87d5fd711",
    "signature": "0x62159c23d340ec2fc4661cf4e32ba79b6e8136701e57b13af16b89f5df6a58e80e5173e2230c86fa0643f93c7e49e1326a53215516151a489f61382a1a515dcd1b",
    "signer": "0xcc8164Efbbe4ed123B8689622b411c154496e66b",
    "userId": "60031"
  }
}