{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50f7f3d8fc2b457cd13d0fd0829ca58887d96917c264dcc3b1fe1215543a2f7d",
    "signature": "0xe57732bfebcadf0c751b06721a1f914997907503735860d67e28172d3f7ac236518e2c73bec09813f0d9ed72dc4a1345910796585dacf0a460100f211e2a3a3a1b",
    "signer": "0xfE68632977dFfBE9213D73b22c54a5A2DCFEaDCF",
    "userId": "637504294"
  }
}