{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142681",
    "entityType": "User",
    "nonce": "0x77944fc6c7a8aca08c87dbaced9ce61c5870625be86af84afbcb584b39639ec3",
    "signature": "0x969918b81fdc422aec4c6d092f950f20f30acf248308d50b2c57b6bfcfca8f321541f321da5e7d673d25a774314af6b3d9c84564efeb4d0ca4049d20c6a2220b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}