{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350690",
    "entityType": "User",
    "nonce": "0x648ecad7996dec4a6794caff1e3b74c520b495496fd19182c93431f5c57e4052",
    "signature": "0xfb6d1c3b3f6e40c9e2025d466c69647fc94212bf64314098ab122d0535414de36b752f55d19713f762c94bff3c05b6f2cdd31331516e606b6c5c3b22a46a63581b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}