{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778646605",
    "entityType": "User",
    "nonce": "0xe8b302d475fb85d51b364c7561ea6a3ad7e4e9ec974f3b6e0abf35361692343e",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}