{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a29ed330738c6eb31f18ee5f57e1fefecb62622b5951b7121b31a34e7fb4c5e",
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    "signer": "0xD21192e92319319249f3df55efE06b0809861c8f",
    "userId": "924892254"
  }
}