{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0xd1fa474ded6cd94e14544c8666f4b8d7d8ab07238aa71467f7c89a205eba1412",
    "signature": "0xe5fbf01c3e981ab64eaf1e6a539b6d3d0884c9513522939ba07ee3ef357ef86e33220a647bd6efb694c95242d6156bdf6a830a47d0c8b42ce5941a0944cd56c71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}