{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "889450527",
    "entityType": "User",
    "nonce": "0xc8ba54cd51f3bb5d1bad88a024b28a3526b958ea70f2e17358fef023b19da448",
    "signature": "0x7fe614981a3ded4faaf28014191a3bbf18d6277a44d8f00cacc32ba4d3e7c25001e398789e4bd27f9c7cd8cc73bca265451d672b7e741527134ec944359ea4691b",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}