{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254187418",
    "entityType": "User",
    "nonce": "0x98c2ef49c81f949f89f5d0a15e47c09c77db5f633040e6043d8cecc7ea9a381d",
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    "signer": "0xd72900E031d6C9829fe9C1950eF6FC0D34C60F0F",
    "userId": "396396820"
  }
}