{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "627500066",
    "entityType": "User",
    "nonce": "0xecd14d098f95b1f693db31feca1692b59cb6f3e719dc8d76a40cabd46a305811",
    "signature": "0xd731b0e5838553a7cc25db3b0a2ceab5ebec3a2567a591cc497582c650d4db141e27aad3247227fd14de51fac0e0d447f9e341b7d9058a38db09e9e65b82ce201b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}