{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340460",
    "entityType": "User",
    "nonce": "0x6854d59ad2df4d16d56a59f5817409c640d52ce868b6e09c7d7f6bc96de6ab54",
    "signature": "0xb20c97a620aea0b7a143d7bbe418ad0cebf54e1591d37d88797f46b9c2a971be31acc2b0df4b3e805da0ce528677264f63cbc93384b06961b8c8c052aa2d0f661c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}