{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdd16cc82a6d8bd37c73a5e52fe8219809da88589c8e2343258a8e2c70a994df6",
    "signature": "0x2ef9ef1ef15164209fd7210cee720b4f565419d6ba92490d92bf97fb632e4a277872d928bb701aaefcfadd974df7614118fe5867710f2b37aa0fccadc877f66d1b",
    "signer": "0x4A8Be1fa2c734E857a920E358BbbC23ce64E8525",
    "userId": "750115329"
  }
}