{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374957",
    "entityType": "User",
    "nonce": "0x869695588c41b675e40e77703aeb0eee583cb7519f04270f54e538f0296e70fd",
    "signature": "0xc2c6ce59bec9017b0f60d23dcde3870795a2a460217c4bbc402d99e29ebddbe955f86c64649c6f0ecc8b800613a1144f5a747d504287d957a7f26b770b4006e81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}