{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe6270dcea991ba52cfbdf0925590133fb77651b01725aeb3b9af8a6f2caa33ff",
    "signature": "0xda78278404e0bbae64aa9211fe79d90d7cffb0ab1419d067167bdc399c4652d850625d1a69ece14ba0df6437e8e165eec2a2809f3634c0572d85227ecbc37fd11b",
    "signer": "0xF15ed9Fa7C110922719e5259444B9935566241a1",
    "userId": "671156314"
  }
}