{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104731",
    "entityType": "User",
    "nonce": "0x4f1cc22d64f9328150f0961303677f4684da3eaa13cd779853e944a288b98fa9",
    "signature": "0x6c9cc414fc86210d0dbf2f03e725fe7aa79dc78041f6aefd3206efff8c9783d45400055165ee6d5a375e46c205a405f4e757e4ceee8151d62ac57f1933399bb81c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}