{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a7a31d5153db1c1a972dd7c2c92cacb3dbf4825878e99b7543fb0912fb88d8c",
    "signature": "0x2850206dfedeb11f53039844270977568daa765c2e04568bd22f4bd5a61d0db2111fa0ac9637995b111e7060502dc5f23e40c4d4aebf255eb7df36fdc39d74eb1c",
    "signer": "0x13DCCf302a981e4d24BF1B7354e4530FeCa68216",
    "userId": "720996520"
  }
}