{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420081314",
    "entityType": "User",
    "nonce": "0x45b658dfc468d16fd1759ef01edee66244d2897b4c3694194763434f2d7eb488",
    "signature": "0xb1827401db8b5b32c7ac23622ffa171ce9192d0efe3c5473a5d470267e1ff5db1542c425384fc835dda0a282cde8e5bc367a780e2b9614f80a4870cf04023a6a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}