{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "894547217",
    "entityType": "User",
    "nonce": "0x37329647ff541157d9d9bcd782f716e367f82cb2aa2b192030bf1944c832d8ee",
    "signature": "0xfb7990ff0f74eed88beaf963f55659489bd0500e0eb9d7165ea559c5c32a8af067cf509377a9ac326bc578c3a101ff278320b616dcfb1d617266e5b208d2174c1b",
    "signer": "0x4e87dc4B2AC993A4a3e3D104a2cf904Cef5aa0fD",
    "userId": "929523848"
  }
}