{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xce45722240994c3874fa4bb6d7b8370cddd769cea15b119cd0ad5dcd57f21491",
    "signature": "0xf842c42d302e6c86f7dc72a2893c442252460498002d661d2222fb659b59033a1537da4525c092ab5353bb78a39ad9a8483acd71864316109c1f07299c1a96411b",
    "signer": "0x764341232AB28643e8106bCF183A4cCc2fFfa6c3",
    "userId": "67250118"
  }
}