{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5648",
    "entityType": "User",
    "nonce": "0xa23ff09a753ce3d527753c15191ce0e6cd938db9bb3006b7263bd8cfe5480e54",
    "signature": "0x76efd1baaa69a335a2a8b1b37fbc57943a8f21e2d850ae24ccd60e21c3db2f6e12eb24a17936c083cb7d5a0371760ba9d09a7493b61991a8b9ca984b1e807bd51b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}