{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5297",
    "entityType": "User",
    "nonce": "0x9031409749095f35ed40b3a039af44695e7298986fcbb294b3dd143e9353a18d",
    "signature": "0x2dddad940c5f2164fd6b90554f73e41ad36e12830b095ddc572ead8ca505b0bd056d1c016e6f64938c717bf266fe82b927b610e004b5aff2650552a42fa2b7311c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}