{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881289",
    "entityType": "User",
    "nonce": "0x0e18478d9a134a9a0a9f3f18f12046c057617d2a21bd0574bfd9ace4def718bb",
    "signature": "0x98b8b249230e60675b3eb48a24415d7a4c79590580bec83f2233d64bcbf999f019f542c37f8cea21cfcf5384021022847e32c400249aab22e0829c045ba9fd4e1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}