{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323199",
    "entityType": "User",
    "nonce": "0x9cf832da6830dd9891b035887286fe18aa40a862a97421e5a7a16a7e58e6b421",
    "signature": "0x5e19d10b7bfcd614341601f3366c946934081f9fb3f5e07dce498655b6db44d46bee5a6d3bf4c6882aea4e095e0af9d40b0259593a3a9d621d423f8139f9bf311b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}