{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57070238a3e554b5bcfeec5ce50f5fc0c8b90b4b82f263683b1ce6c1e6198d24",
    "signature": "0xcbb3d495c49a3136fa92dd9cfef0e3f735678f6b0ea80120db4243acc611a12e40ab39546e43d66e3c943be9eccf2447f453905073e16e21ff6c6fca776571021c",
    "signer": "0x4fcC461734A738D49dd2157C29fB2318fEFe394a",
    "userId": "531420291"
  }
}