{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "449002461",
    "entityType": "User",
    "nonce": "0x9aae3486e17b797219d395637cb5b16270305fdd33d7234ffea29afb8743731d",
    "signature": "0x6642b3bfe68cead2bda4d90c6d45bac2ae188c8edbc75ec64228f1720f72ad347cc368d3164fe493543c81ec03728325c1e517265ac25309505b389fbfcb71251b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}