{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12505",
    "entityType": "User",
    "nonce": "0x408fb0e44e819d6e7132f1556279966469ccce9564d28d105c257c7e49eaf89b",
    "signature": "0xd38201addda9c4415555e978bdcf3cdcb504a98627f5b318e5248c5d10a4473b35b79601f76d640a0ae782593682948d5415c03efc3ea0e548866971b47701c21c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}