{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108278",
    "entityType": "User",
    "nonce": "0x10026a60a1866c3e234e581b144c9a6d8f74ea32a2d84245dc14347b0b78083e",
    "signature": "0xa2b78dae5e7f2d9a2c590c39a22c2956d4149468ab343d87e6500461fdc76ee11029aee61f01ea50de4b0c07c41bc881efb1131c1ffd8ef1da80941753ad644a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}