{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51663",
    "entityType": "User",
    "nonce": "0x5dfb142e97de2bb74b351b531af2defca0860b33ad4a473191a2927237ff3757",
    "signature": "0x559b2e6fcec5c29cba97be04b3f21833fa0253eb28b48fdb2837c6027306a2313550d290e96c73e8458d1ace106d8cac2ac26742d6e9185a2feb7725f20958f11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}