{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xa6ccc45755ec02035e5642346d09ac0e929bf7e21873f476ced3f86541538e35",
    "signature": "0x3e780bda813d2dc9eb7440ec8403add1ab2d6850fa4575b949798648b27da34508e86cc424cb6c1c2b81ac5e461518b62a40e39eac351fd9bc25110e2bda22b61c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}