{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64ef5a92469c61fb35bc14f7d0feeb7a9cafd03a21c211bccba475dcab894769",
    "signature": "0x2256704e35bc8aec6393fb8dd4dfb2ed4d3bfc56c62eaa1e1f6fc561809f3d1e0661199692071756d873979f2b41df3a4adbac238d1cb57d6131f6a9bd93781f1b",
    "signer": "0xbc0b2a8CEf31c47F34175F42C8DFe1B4f4961F80",
    "userId": "727853425"
  }
}