{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357845",
    "entityType": "User",
    "nonce": "0x91c3f4a934f34039689f5b63a8e81c94fd1d92603e1fb0da190a1c11a4d02b57",
    "signature": "0xa93a8111060cfc96f3c748678defe78bb17c12948bbf513fcefe9bbab235cf5675849e3d9beabd9f9e9bebe6006209cda079526875fb996d797ca531ca29d0231b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}