{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13412",
    "entityType": "User",
    "nonce": "0x23b2f301b4ef862bd581327f9d3595bbaff80adb193fb502b5dc83559a89d7ce",
    "signature": "0x9e872061487fdefd17f3c74fc48e3e4637ca28c8bf1646f678b48a647729577542d1fa953971281b83a57d9e397554fd7a087c2aefcfdb1979f34f56397da21b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}