{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x92f703bfb288c01f98b456d2ab295f87b4917d2be88302a601e61b033ea897e7",
    "signature": "0xe1207ead58fea6bba9b46e98056194974c3d13a7040bd245f73d01a494c6245c52573d0bf8f56949d9c6bc0c42bc9825cc7a0bb728b57af3ba8236209f79e4421c",
    "signer": "0xc71A51Fd647Cc41F162dC049f1D362d5417c6665",
    "userId": "973864985"
  }
}