{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdff3614c1fa23f36ad0826a954e86065b7654a8d4c92e36d9443e9a5ca989af3",
    "signature": "0x2cca658c2ea9e3ba78f6398dcdb598c629a2ce0bca5a06d507fb109d8b330c5573b0b8d58d91f46f12f413875c949d66c11c69b77f76ce1c62afd5832fd3e4cb1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}