{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x6472fb091f3c5dbd1bb654b5af521b12170a351ecf4c5361d2fc71f458051ddf",
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    "signer": "0xB94D096f052b51559298F0E8022085a429B93359",
    "userId": "998540305"
  }
}