{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xc1b4566394d8e9f985f96d43d1c7eb92665d656b8b772084bcc2c318e6a29875",
    "signature": "0x24ed4e02be46598c2d348a53918a33a3f92427e1e5d96af50483cd0bd58508ec7e9dc01c4a90d9752252d0b13314da9e480e8ba74cefa2c17adc3f2604c008301c",
    "signer": "0xC14d01Ad1443F7623B61668BA3E768ea7Ff0666F",
    "userId": "321158566"
  }
}