{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787975550",
    "entityType": "User",
    "nonce": "0xabf3bb87872bb4da7f04d79479c8d3b4503d46af14f06e8ab855bc4bd5e2fc5b",
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    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}