{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345951",
    "entityType": "User",
    "nonce": "0x4bc6f5f2811ced56e3af17d12747a493f49813ee56bb642f792145a8c23e7b48",
    "signature": "0xf13a5221b64058a61bd1f768f91e9e60fa794cb7a2c493955b81b2f70723ec4815f6ad45222fb5b8b08992773c9db310292044fe4e7cfbfa7c329438cb4e53a41b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}