{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1904529",
    "entityType": "User",
    "nonce": "0x682b616956ee979e6c69a4fc0bf9040ce7ad74396b798adeafd0a0caf8bb0ad3",
    "signature": "0xd64f83b845dcc3258a246990262556ac777fdd3b4d357ab705e9e813af9e5aac5492e8b72e36582a2f2d202808e81e55d96532532eceaf10616f9f4524aae52d1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}