{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40454806",
    "entityType": "User",
    "nonce": "0x15eceaf4abe610f61e0ca93ae07204c0e5cac1b96c47f34c120b0fd06744c0cd",
    "signature": "0x2b78864cbaccc94f17e1139be0a0740ea3b2b481502bf4b3320eae4fd5ada6136dec6f948dff8ab548aefa9de5cb712bf13cf82311c4b9fd50d382c0e07665391c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}