{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880686",
    "entityType": "User",
    "nonce": "0x6db72690c1f7eb9ce2e01ec0f8bbf63da18eb5e21c64064b10352bdba7e342bf",
    "signature": "0x617e94642a5b6280547c0983a24abda63157e133986e66ff8f083cd87987137a51ba57b70d0f6f6c9ed0b101cbd1bdce10dad5c1e11b61796b526b6fd3325cbd1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}