{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "577399",
    "entityType": "User",
    "nonce": "0x11fe912ee551ee6e8940337d9e0a2d1c4197fcd7c9f6f7c8822fd17e9b1f43d0",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}