{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x9ee780f98db52c0309f7ebbd01c5cee4512b3f14718ea907e78421e68fa7697d",
    "signature": "0x8353c0baefb40798b71ea285a5201214b7bbeb94f4db50c3190d98a4741b0dd101a6d5385d00afa7613f285472bd9d6e53605ce4640648e317736472cfe5e9ae1c",
    "signer": "0x29d0C785abd77c22c6a474D3c1873C6e92877619",
    "userId": "388884075"
  }
}