{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837777538",
    "entityType": "User",
    "nonce": "0xf3671f8f6215810e7550a33220ab64a69b4b9e3f7d9aa346809ec01e185a1236",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}