{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15853",
    "entityType": "User",
    "nonce": "0x354ba2e9ee5ec35daef5d47daf911786484398983b365adb975e3c4ebd2e67a3",
    "signature": "0x777ded6ae81eb53610d2ed202db64b41aa8c9d069c2035a94c38ce139e6bc841090232f642c56b8d908af6190568550c3a314b20739f33c259b1be89887b48201c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}