{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336974",
    "entityType": "User",
    "nonce": "0xf4994f4c1e032b92e90016c895f99d27284953dd29f95ad83628b0f943f61d09",
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    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}