{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294572",
    "entityType": "User",
    "nonce": "0x75e39cd8865e4789746e08248f70e2a3fcd446b172f9fd8f5806b4424e4bc6bc",
    "signature": "0x10baa529eaab9eb48e607ec6eae28b7a77f44fbc1e8c193974fe54693a847a2729872b9b56582cbdf8d352b8a31fa26b4ccec38efcd41d92e2db6cc6484bd7901c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}