{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xd99b6b7babb86c759f0ce8135d7f82bfa906df4b017df35918dab04bdb7539b0",
    "signature": "0xba45080e6e3be7bd667ce74881796e5c48cef99b9ceab0b327f4d985f487e7453c9cda8f25b2d67cc6f78cbd3b02d1eb431f45e04f9d380f9e08492de7b2b8f41c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}