{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880346",
    "entityType": "User",
    "nonce": "0x09781ad03f28c39d36ee4c2773aed3e68236e24c2ad2212ac4575cca68bb1038",
    "signature": "0xc21b62a657dcbd73b4b0c75fd1644e59907032d1cd6844ac61caa13c4aa4706074b33bb67edc0daf002181ad1ec80b8727979ad8fa637f7af42a78d62ea6cf5d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}