{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450",
    "entityType": "User",
    "nonce": "0xe5b736856049ca4f2cfa035f447318bd4d7468b9da180576dec76975799f2877",
    "signature": "0x79c78b9cf949bee9380f83f8a86f04a4e3e9e749cbb5bd1680af9e9c91c032cb502d38093d1db92ded8db9056c3ca7847aed0c510fba2ad4a93c62b29f4f85761b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}