{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2a0fedbccbb401be167ff6d60b0a1ab2fdae7c743548fd92f2ac046c8f32a11",
    "signature": "0x67b2f2a44947d20338ac7b737e0e4708bbadfb19030a715fe280859d5e3bea510a181c0a6e57790c49e71891f294f43ad10c859dd67444a4efd25259d6a99c9b1c",
    "signer": "0x71d32288cAa12eFeB3233E78Dd2B45De8ad0F20c",
    "userId": "592020100"
  }
}