{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8eefa0e0170b1800c793d6016844b23db0669d18d9606b217837752c307f6a80",
    "signature": "0x8ab5d68a8d54014db1fa67abcfbf0ff63c8d9d0de7b3995acea610d59d6fadbd7019799bbed7c10963b407120f443d3d5b65b4e18c801a4f54ffe6dee84664201b",
    "signer": "0xFdB1a476e6b2525C8d78967730Dec5E6f522A7f6",
    "userId": "269522792"
  }
}