{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18534721",
    "entityType": "User",
    "nonce": "0x1413df594e1d83736f6b5578a9139d580d5c1f9c23d0086ef7a95a61703b6e69",
    "signature": "0x86be3c51546ecb6c7cd2c4276bcd3ab917552dd8f3eecc69c3e8a1b1f560759e4109bb0c7ffcf7e17793c28530eadf116e2c4dabf00e34f0f2b0bb8931e0a9951c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}