{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e9e550121979946cd073621182a6e19052ff86be9988ec74e22403efb1d7a72",
    "signature": "0xa381690c1b5c844cdce55ffccea7c957c6370df87245ba4eb5932ef0a1ef7dc339a3722faccbcc9682713d2b82e383b2c13b28150dbf1818ecce439b9dcb8fd31c",
    "signer": "0x081bbFbD492AdF0B1E98eE17ed2De9398180Bd96",
    "userId": "783363735"
  }
}