{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0x6286b3240239432df582f9848791bd2c241356053e7b8afb51d246aa0710d29d",
    "signature": "0xa806423f2739355d37b4c5376ac496b36750fffc9e7c76494d179b21f037eede2c43e328593c99b8cbf999564b0005284050f6bc9be336df1358369e8cb0f2411b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}