{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843421708",
    "entityType": "User",
    "nonce": "0xb5be4cf896fd8387e4337493e8526ce03aea6e0ee3ef5711ceb26255d813fefd",
    "signature": "0x00706b5062c80d3ad8493bf52f0d144008f0d5a3efa7c0de03d24302a8f2d9bb1ab3dae778f73812400dbb880a5ee7c3d37495a855f983a233ec12cd14bca6841b",
    "signer": "0x12302E88Cf971407d5bdd167b1AA2664556D3385",
    "userId": "68176371"
  }
}