{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6492ea9b58421ede71ac4851489a05f93e57ad90294fca61e26d0406ce671c5",
    "signature": "0x5e5a46d627582c8c16165f14cda0f8b4fbc13a2e3be4d6aad20863c1af56ead9372c09d428553902768e54708663789705b00c066035bae3c77aee6d2fa6e16e1b",
    "signer": "0x691141FEE5693C68A0D1808C84e5aAdd54786044",
    "userId": "215489670"
  }
}