{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b21128e2a8a38141652a3c6c0b516fab73007604243239b61eb56f2c7a49fc9",
    "signature": "0xafb4984d78bd82d29338afe9f5831601f5b4813b78bc6bd14c7cbdedb17f13d000848c3ef0d3572ac795325b98c5e49bb65b333aa2afb4ff5dd401b2f091a1b61b",
    "signer": "0xfd7b89EdB6CF9d00f8D0934e76030556f2167494",
    "userId": "536358467"
  }
}