{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "621139412",
    "entityType": "User",
    "nonce": "0xa026adc45dcd89e42b879e156177a1e454491724373aa10fd0dee6fe0229f088",
    "signature": "0xd1751fd1ed126061de9c777a71cc7e4640da9ea502c61ab73c6dc193d91e1a002e2cefcc754e6939e385df9a715b6a34557ef5f430a88e4aaa65cf82f4de7e601b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}