{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x812a05d348fe9ad77ba5c75f27d4b13f47134a78ec3c2065a04ad3ab933df761",
    "signature": "0x3a1d5b8ca8a8ef06b23710c62d2291f8040b6f4f7eaf73606c01e73ea41de369741afa04a6e24c05c6192aea08607d9613c991af4582db4aed63a80b15079f811b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}