{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51324",
    "entityType": "User",
    "nonce": "0x8c18b01fb5a0876201f86f854dc2c6f976c4102a790e74037162227dc8eee4ac",
    "signature": "0xde53be906a60366b34820d4784c18c20564a57086c094f7afc6604206c03ecf76c836a3b3e8a73b0118fe596dab86f1797e87cc5bb1af21a5f8959540d2999be1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}