{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2bd9e7c3e7d8852ad813ba36241d305a6259f6307f630b89618a901658d9baae",
    "signature": "0x8794c47f6f249c8fca90459ddc9062064fa10b62d3a0183b1eb61ab5a98eb915632f939881cdd6b6c3112d1a3d6662e0f57cf20eb84850dc366fcb7f1180c86b1b",
    "signer": "0xAD70397544Ee4e82a6AB7EA8365282a449a99DBD",
    "userId": "640375784"
  }
}