{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xf649b7c30d676ec9876106f319dd2181aa15a4b57510efbf0677e748daad03b8",
    "signature": "0xb8a2180ed624d5c89d7f21310de7c5f4f804e6f101435f0b1695c971fcbfe4d263cf4fc2321c5454dda09187a221d7cbea89e48d9f270c7c7aef3b02223c660e1c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}