{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "784442341",
    "entityType": "User",
    "nonce": "0x882a541c9afdfc9eb99fe77ce0c291ff2098a9f5698cb6f8a3d27b0a191d9e01",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}