{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xefc5d3f3ac48eb228f900000edf3ad083a11a5405310795d2e37d64d71b87de2",
    "signature": "0x4ed974603ec0550d0e5ecc824f2e5d108ea6524c186340eb1c4789c21fd62d485f1dac6a515ec32433c005ebd5092287c103b6c14cc3f72af5ac993e991490451c",
    "signer": "0x2578e08e63e9240DedbEB392Be8356ddDBA5Ebea",
    "userId": "782603281"
  }
}