{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xce1b2a176357048789f6cc614b498c99b27a6d78cfd33bef4a7bde0102bfee1e",
    "signature": "0x0f30abf6eb6d5678a050aa0a16f44cc311b1f2c3d522c6a563194d9529c765f91ac7fcec37558dbb0af5cc6f3fe87e94a56d06f6b2f8dd656634c838a756d2cb1c",
    "signer": "0x67cc99D80c366697AE8f8E8981c6447F3f87C15F",
    "userId": "630322003"
  }
}