{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103874",
    "entityType": "User",
    "nonce": "0x2484499d132d2ab5dc411951fba6185cc5d7665729ea1390559dd852f24f7037",
    "signature": "0x64ab50fac9bbec9c0b838f75212700115e7b8bc53318f8478d0bbf4486c36e941c014a0d2b062bb4912c1f202757ba315caa23694405efccbf4bc7181e6961151c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}