{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0e6b0156a94166a9e5183a7cb001c0338b94a0bd0159bfea51d9da69cf54bba3",
    "signature": "0x2968f4067ec31078ff338048dc8ab21a521dec85c6b0adbc5250a3384384e1e72ed5912b40b2e8967b6d3fd823e2f4ac04a4d38992a397c2c87a64b88d143c171c",
    "signer": "0x831781d5BfA1e53a8D196A43Fa8eBF7D9DBF049E",
    "userId": "128365105"
  }
}