{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf29588568e3d509ae6f2a24de852e35450aa6abce6b5ac22ae4a5f826625ea8e",
    "signature": "0x0ef85e9d6568065d536db5e7f7e7a2a7354a0fe950b8ad4161f134b807886beb067b225485dfeb8a1c4c402315dd80c91ca86d1cd1ac9470f78ca9789284ab9e1c",
    "signer": "0x16AaF679643e6DBfF56DE3735A744ff5B6856F3B",
    "userId": "513179323"
  }
}