{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c04ef0d1295cf6d70c0cc4c08aa3d15a4f35c9c8d233c78b106520a939fb50a",
    "signature": "0xc9a9aeab9dda4e31f4daa2135ab3c8c24c8d09c120e52adc8b41db80a5630a247aebdaacc6b905b086327f0520248888fd33d943a98b11e16fcfa4ac95c48b801c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}