{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x772c185a8bbb814ffb31580e1b4aa152cf74f71c786e88af7fb23b2044835f69",
    "signature": "0xd28fe4d63aba212a2690402491ac6cfe717da3993291848553b0a713dfb6770548728097241573d79f3faf7e590731012fd4abe51d984ddd4c9ed17bf59433921b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}