{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8e26e6444259c629597080d6c714965e0a5e69f38f4444584c9213db7b8f15c",
    "signature": "0x6c2d4bf7dd1ee619af229097d5b81aa85119912956390a5c8734d42e083ecd5b4393e60745a197238f09b97c4531b27e66d63a7839f12006019fb921c51689941c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}