{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xa14dbbbf0252c2f52ee18c1d4fbb9a0e68065912f4c44a72bc561ef4334a5360",
    "signature": "0xf899e55574a4881b9bda398ef13f2986034dfc0d5bfd81fa531ab0a53f5054fa1bba3f4f064518b5b406161f90c56f6851f6b484d17eabdb8512bd7b0b9c6bd51c",
    "signer": "0x9E24Cd4E019Bcd1a0A64e8156efc4bE0B46e9a92",
    "userId": "697562886"
  }
}