{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xd234b0f93014acef786990df7de43436394f069c02d9a24755cfad08223889a0",
    "signature": "0x5b7b06a304c5f16356aec77a76913a8e9ddfbaa1bf56740b2d8d9a8e47f7f00d210d08b80c63c3fea53c34c7148729457e7bacbc1590ea7288856accb71bbb051c",
    "signer": "0xAfE04b3A47505816aD72A3036422AC553C1dFEc3",
    "userId": "515307498"
  }
}