{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1409967",
    "entityType": "User",
    "nonce": "0xc7b67975aecb8e328abb48e5c317d4cc0075b62756ab98d1b0565b1541e6039f",
    "signature": "0x541a0a11476b2624c58e132fb765e675da12744091db86ee11108dca689c0eed3451f299de6db0851abdb5f1086804e118a358ec9800d6c70127948f6132f54c1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}