{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0xfdbd642dc01cd93f398b6a16dbd4fe78ef49d8ecc3b5d4d2850ec65a36d6c82b",
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    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}