{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375501",
    "entityType": "User",
    "nonce": "0x4f5f5965c2dc0960d414c8774e0a97a001b5d3d4bb37584aff8d689a6db8986e",
    "signature": "0x8d99605bea73661aabba00633e9f609319e73f6912b6ac905a5b239449e70cdd1035d1701be52ef6106200686570e0a5b33b138bb97586edb5b2d9955fdb45ee1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}