{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4bab4ab674a52ff7ed3547bbdc1e4f04d971f8fa1121f35fcf20ca8a8006e2a",
    "signature": "0xadb3fdaec14066e3081f5627d4648590c3640ad4f5565913a3729b7374f8705f54e92a920e21aa077ebb0da098c52856c9590a9c3d015e0c041143a2675838a51b",
    "signer": "0x6b4Ddba461362A4Ce6319288E4b5077ea34285a6",
    "userId": "152128167"
  }
}