{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "331612",
    "entityType": "User",
    "nonce": "0x727e9537117f23911ebe9f165533e9b6439280303f4285a07254bdb8b3efe31c",
    "signature": "0x92bce804ad7231f674984f022d75882f152fab97feec87ed5b8f8b3918eb8cbb7a9130761770cf053b118c3f4507afec9f4bb7145fa3d42afe7f7ede0bd470231c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}