{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "956403",
    "entityType": "User",
    "nonce": "0xf0919b6d96496f73ba3091beae09d45bd9b1ed6676095be2c6a8d9df3a8a561c",
    "signature": "0xa80534115ef898d5025a8e02c9662ef05f946f7782918e54eab3d0858086d9b64c7a167c52c430f1011da9e0af71e9c778ec79d236dce0ee6b5dfccc9af17fd51c",
    "signer": "0x4b1A8281F6C7611C75f6c44f1D3B258B0143F613",
    "userId": "513956582"
  }
}