{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234326",
    "entityType": "User",
    "nonce": "0x7e9d7310a0fc6519c3c3dbd4e55bd544c612b9b22a3a6c1ac0a403874caf6040",
    "signature": "0x9fee015001dddf4b034c1563396fffd1c2e55e520735cde130324c4d19a16422250c1e4c30cc71e5712f6004b54daa71e785f222d1c1be94657d736863726a331c",
    "signer": "0xDE3686894b1BB7886D5a1995730930c47824F3e6",
    "userId": "323456"
  }
}