{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296865",
    "entityType": "User",
    "nonce": "0xb9d3c745b1d89ec102a9554c947e7e2ef4cd401c4054e0f7f2f1a1218cc17ec2",
    "signature": "0xf0d551fcd460b2c75b1faf76c5e3cb6674439f88db2db5e55edf7cc7c0f7dcea60d761fc8cac5bdabd372818dd0a896cb1ccb2655645b697e89e76375fac44991c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}