{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x5c3cd5a3e9b660a5edd95df1b7371e13fd33dc2c8f9858ed3f6c9ba7d4187d3c",
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    "signer": "0x4391C746E11181B87164C3C6DcB2EA773D749ECD",
    "userId": "729432364"
  }
}