{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a81ae2ddf9f0de196e493c06f17545643dd2e1366ebcdf69e2f28cda53ce7d2",
    "signature": "0xa737971d6e35df22002d9c2f882b602d337b7db421888d41f2755d556616c2a72de99912bacc2c0a314cb8a763b1e3c67546736a79da498b3f10f3d4d3816f241b",
    "signer": "0xca8b57A302d2922033E00904F5b482FeC42AA407",
    "userId": "679787834"
  }
}