{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x745db8ab56ea0a6758d4d5fefea452a56a9b42c1d98ada78789d57e26a97cb85",
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    "signer": "0xB93F39b11e088B42985Af5E624e4ED06527F0FE3",
    "userId": "366904850"
  }
}