{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x1b4088a98f05a68c67eddf5d757d500943e7e30e450771b8d25f3fa02edc1a95",
    "signature": "0x77a98674c3d514c91b64b5ec4a159895f80fdd7099713f3205ddb648ba10a6e850f765099864e905b8a99d711d72d69a568fa25adaec94bb71a8daf95114c09a1c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}