{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa44942bafd034f03e807f8e91e3d6223c9d90fb9f1d04b25e32173abffbe2250",
    "signature": "0x070b384a6699f1749564882362c5cf4c98b0571e04d7b98177e0c820a8d6f71b38596a1dc86589cbe522c17ce2212dc4057c6b68a60f8b1e7d4eeb34688715c01c",
    "signer": "0x1cad9Dc848B4917d921Bfd79491256e029A5FeDd",
    "userId": "468495839"
  }
}