{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64de12363589fad47adf8da0d1144bfb027e27e6fd3d2db17800e7e5a5fd3a33",
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    "signer": "0xB85A892f335ed2bf6e3297cb18cB6e650AeB1Bb7",
    "userId": "473881009"
  }
}