{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ad4deb44739df0c59e0ec2a0ec4c092d64d3552b609083fc39efb81c97ff59a",
    "signature": "0x5610c48ed21ce9f7380f9d3ce7681e8c7acf679504b3912f23eed47d8a086a4014ee93f18e008fe9ebc35844a35bb44b895c9d126d8fc6da0462ddd64850f1211c",
    "signer": "0x19aeE388f7964b65f4E881b15B7c800980e9aEd9",
    "userId": "407898836"
  }
}