{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278974",
    "entityType": "User",
    "nonce": "0x7cfabd713d85c2534bcb99fbd74635fab678aa664abd96c442b6901427ecc8af",
    "signature": "0xd4c1f1e410f4bcd28c453819f5e5e27d8d0d664927f8970cda5ccac24785ce0e30872b3f644758e169aeae09a937231144883467b3fe76b99e01f727c071e3371b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}