{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa48043f57aa500f890ff09e8f09d291a5d0fce0266c3e64cfbeb3acaf43fde68",
    "signature": "0x67df0a0e8be8a4a471d6e29c205114ebbd0e5fe2e6862bc70522c1e02fb5f70d48a355552a9ddc23f60d34deec3ce5d1f0f2fa7bdf5c74200b41270eaa1bc3981c",
    "signer": "0x0E1419Aff1544Dde5c4eebbCfA208Df83ACdE40A",
    "userId": "564626302"
  }
}