{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72e843222e1727e063afba09ab4140af4ad7f07f247004c25130b6f96467c558",
    "signature": "0xd993e0ba439da15ba418ec82128654c192bf210b92f8d80e8bf9507a24a14a96016ace3e86d9c1bacdb7efb49beb3eaa4f35c22c293e955744fce7ac7c54cde81b",
    "signer": "0x4ac23dCFa73270D0cdFeE7D7409959255f83fac5",
    "userId": "21603383"
  }
}