{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x16a636e7041769f56806ba382994acae064a449074fa17d1995abef266650818",
    "signature": "0xd9bd8f0531417cef2f83cf3e9e8d1825432c4d1294120df602c3ee6602aa935b60ae62bd49d9fdb4673f308a0380eadf1b64cf8d6df43210e2be312f63e6d3481c",
    "signer": "0xF7F56DF4D8a2Ae2BF9Ca645DC684f84c37BbDaFe",
    "userId": "116272245"
  }
}