{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4327ff2b495c124b08cceaa7a93954190891f9f6cd0ab42352960d00c6c88aab",
    "signature": "0xab889ae2ed7770ddbd5e741b3d9167b406d2f62c8f2e8aae4706ae65cc9136215cfbf121c9d62bf82f54c1af094ce2a146711f31656b0dcf65356f5d2e03660c1b",
    "signer": "0xF5a4f8fCD6d35F4AF037631D92a627E42c6B9BF1",
    "userId": "713783640"
  }
}