{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa1bf7e6bebda480146c2fb3400a21f2eaa3b1688969d1bac37997e2b065b87ef",
    "signature": "0x70ab37639204260046293486e27f58e120a7263c436b4acee7a48e2f4a8688d501e51168e716d235a45a5af01fd0f387f94a2dc42c057cbcb672646af7b052931c",
    "signer": "0x1DA8c4D9c9F3f7DFD3D2C8EB0B0F1D847c60247d",
    "userId": "919693739"
  }
}