{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347139808",
    "entityType": "User",
    "nonce": "0x8377b6db97514ec5ee437ebce08baf1f61fdfa22d11121afacc449e23c4edb11",
    "signature": "0xde32d70153bec90e48e4127c7365c07428331ac5e6604f4e578d827cc8bc436f11c6cd4dbe20f643d6903ce71e4eee18abc48b6f5911c3d265402068c1647df51c",
    "signer": "0xE18f37f193553F7bFB76f10C386b65159Ae304E0",
    "userId": "4510"
  }
}