{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "524124418",
    "entityType": "User",
    "nonce": "0xe798e52448f19cd73611b1729ca173336a9cc68d96c3570b5dec7fdc465a5249",
    "signature": "0x26be18012861b0af0cd3d083e596d792dd18d84fc919748d3493bb37fdb1bed47e7837e37793fe9fcb96efb1bcd19caf0dd1278e28238aa440e446cc375142e11c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}