{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb663a24496f9cbd34a94609884f0dd6f76ad1ff9d07bcf715356794b59bd037",
    "signature": "0xb20496c3e9e13365f0c5edf791648dc5f2d0d4e3dcb382843d90208e0168a56e434c3d1771ae29e7361e05a0fe1c46a7f86dbbce5d6f320d88e5a161bb3d50711b",
    "signer": "0xbcc1c37Dfd19ee2B8ed143ebE449e5c756163B4B",
    "userId": "758001977"
  }
}