{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "815537464",
    "entityType": "User",
    "nonce": "0x5bf075be33f590c07a1e84431a4c24583d6d2e55edc62a3c5b8a33a96e89e2cd",
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    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}