{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe5d2b5aa0a30c7256cb98b02abf4ab03b3d40709daebbc0ef19162a18167a78a",
    "signature": "0xcdb526e522cf6acdf84c123452bf66c2e64b4837273f84b0cd2cbe42a89067d416aa5e03f5804a98ff83cd3fab65632e66021a8b3797154f4623741a7cdb37401b",
    "signer": "0xC9fBd2329b731fB92D2536A37f8Fa985124329c1",
    "userId": "80623860"
  }
}