{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "867974637",
    "entityType": "User",
    "nonce": "0x4d6b56a750519eb499be9c1e0ad2e358920ea855126ac6f7f4e3a5e078019dc4",
    "signature": "0xedd9fbf073e07eff3181a93ab9851273bc677187d560d99816c15842ce3b2885354c75d9ba9984a54c8c476ed2a41572eb78525de1034db1e02c74485ff74fdd1b",
    "signer": "0xb3ec8D53b350D3Fae74A06a6023Fa66171B67E2c",
    "userId": "695620563"
  }
}