{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370922",
    "entityType": "User",
    "nonce": "0x1293753dea211e955a08a3383f994f357fccaa59f07d509d590ed3c13368592b",
    "signature": "0x60424acf383c7be09391cb7e6feefa18475dd0874856fe49973871571747d38b0eb053d4b674d4c7c42e977611daf9ff20bbec0cc8a89bac849bd43c8cc3c81d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}