{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190406",
    "entityType": "User",
    "nonce": "0x62f14817f5c3e43105a682640f9e5270ac1dbe2b36a6e474ff198d3bcd7f79fc",
    "signature": "0xf9bf0f81ec4a3929d0872a52977fc91728cb984a6f41e6ba0ddf71d1c493e24e0bfdef2c83ed69501ec5a3631757ac604890b7ff4c9e42e606aaa5cde82181931b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}