{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210894",
    "entityType": "User",
    "nonce": "0x9a250228fbe899730117e739a4a236fa35cbd3f6edbe579470f8658f2608854f",
    "signature": "0x88f4c66bffea32b11e982848685bf153b2f8a137c1aba3173ad8baf33ab377df05d30a94b2b41bb7500d5c8cfbc07d5f7fd8b7076483353127aa0614349570041c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}