{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776994971",
    "entityType": "User",
    "nonce": "0xa3a82302c08e76198a7485320c7959c114e61bf70e87c0b0dac07c742521f21a",
    "signature": "0xe22f2b30e4e736b9ee3d6de0d3fb94168c8b52e55e8dd5095c4aff75d20b27720b602312973e6f86841ce4b3da47af4e6ac2913e976e4eacc3a833e4ac0dfe1d1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}