{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172",
    "entityType": "User",
    "nonce": "0x90f146993e6a8f6b897965e44d58da221e515a386ee7d6f04a6fb23fda5b5b45",
    "signature": "0xdb360c3d38df7b196e1a7a3b11f0f34d605899341239d964df628555a56e40b0610d22495b9065f4370098f9d916b601ce162b312e7251b9176361acd3e4d0f31c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}