{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xd0a428fb3ebc335db14b9aed4c6b27f6576835fc14c1db6f43cdfde93d26a1b1",
    "signature": "0xfbbdc45d3b33db5c3cacc2a37588cb9044da7657cb8f48fcb409d943ee797f40433f9806a9ed1de623b35b928013033cd3ed0a4bc8087c6fcbec371ccae44ee61b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}