{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306414",
    "entityType": "User",
    "nonce": "0xd2b71643b3d21f6b0f99e2422746e032079106a137b0affb3b09347edb61f5a4",
    "signature": "0xfbc50402ec115cde9be1ff78ab517c233c0659f79082c801951bd3236c3cb31458bd7232d1b2b61fe70728899396cd8d980f42aa71bf259e12532368b0514a971c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}