{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9220d67abe1f6e24dea3e3b5b96463d728478e306073fa39d72fe3e4a5382838",
    "signature": "0x9f4efd7e30c7a7fc3a3d5300fe47c7d48a9c1a2b298d4278b81a75035f0ef2ae3491fac5a43c9e2a078477ad3f77be9e80e6cc1a986f21ec91454738e7eb892b1c",
    "signer": "0xFA9112Dc792f388551493e62b4aC1Bf4828BE182",
    "userId": "497806262"
  }
}