{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8472743",
    "entityType": "User",
    "nonce": "0xa8cc4151f0e0bf89a804d1dcb0d2e3a08ebde8cd191e7684a681b221561096bb",
    "signature": "0x6ac439a1a18d1da2ee858fb2b3aecdc97f25c71d0c04f751952f5f3b14d0dc1663221437cdc4d641cbb4efbfb0c30c30443a421f975d1c83b0161dc559e6cc481c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}