{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906542957",
    "entityType": "User",
    "nonce": "0x78fd71a357dcc28feb85d37aab5f3304e0303f475dc8823e833475af0fbc613f",
    "signature": "0x21ad71604f76561d71629d9742dc46e45d20dec46870f99de70f9f87bae96f6b734dd269778043d868199e9a411d8ad09b08fba08c7890aba5f89f44298a50001b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}