{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d24791215818d50d108b97acef86a41081562d6a3ecb3a81fa83c6ab8450ef8",
    "signature": "0x1f7aa65d1194060488c688b938879e8994845777dfc5f59b1ab7f9c0baed6cb0337fe4ca9e7939410456bdccddf9153fd694fe5d533729824e80c06db3f8f2f11b",
    "signer": "0xFcBE4eaea370ec04dF09e224271FFeFa75F69C67",
    "userId": "524818998"
  }
}