{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf7cab8be41f30a85b52a1ee84490f4d53140fe9acff9f437b7242404ef121b60",
    "signature": "0xdf064e2ba4fec61c2a8c8f749a14648bb09e79317df8dcb019fe4ff5781c01042ebc275ceccd834b6be2d5f1da0916d6f2e6f69aba240bc3c95ba4b5fdc2d20d1c",
    "signer": "0x03eBd76f03fee1b68d042AE492e5168848BEb443",
    "userId": "180170571"
  }
}