{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x064b8e64514b30400b672ec4ca2693f6b4d7648425a037af03d9b7266b524930",
    "signature": "0xee90cb310be64ac172e7811e40769f4e59ca00678ebb0fc64f6ffd1ac97225a43291acd42a0b12715710e6afaece3319f05e101810bccaffad1c16fa909d63221b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}