{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "455523377",
    "entityType": "User",
    "nonce": "0xdbccb5f94bcd1832056f866f8980104494a000231b713a8ed6fb3eed163c10b5",
    "signature": "0x58fa7ea76059e7284eec76aaca24d2d6e9e2494aec52973a77cd0fe61c6a07a0360aa1538904c4f6dbf247fc94f5eee3b204cb664c9bf233d4f34d66e615183e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}