{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "56737",
    "entityType": "User",
    "nonce": "0x537008e671ff1f129c1106f2ac482586a698d529705e6cab7a008474b4ae0b2d",
    "signature": "0x7022409a9644b57adb30eae802d5efa23309fc0a9a4042d2fda144d25963c1f12b50d166600043765676d900024162ded02184b672a548b7907db8538da43fc01b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}