{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8be23e39642cdf7b5d79b36569da9e706d83eb20905ade00e4fc08d0004ac71f",
    "signature": "0x27174b9b9a523d2a4a6405ac6ffed38cb162de5f421f4e715bc8507d8273341a19ed6630dd7e8924a522315c6fffd0f526e3dde6d8d29a8febc2d7b4b5d22c031b",
    "signer": "0xc8224Cff31D058DE8F508F21cb5d062fdf26a93D",
    "userId": "157705806"
  }
}