{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645526985",
    "entityType": "User",
    "nonce": "0x988e2fe1c39ec11253b424eaa9c5532339c810923681624abc5441906d631ea1",
    "signature": "0xf66ca11bdff9e70bd0914bd0a7fded81eaa5bdd82a4f6550ba2efb9801dacccf34bff15ced415357fff1aa40ae6a29488f63ea80f0c2aff858652061e72874351b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}