{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x2b3fa09d9baf857b0c9d7fcd244a57a1c99d99c1d72f708e323710d1dbb74a3b",
    "signature": "0x8d072a7773a6a351811f74ce78a63327834b8268552d97f98197c7d984169b8c36e9f98793ad18a983a70f820d85b9a7fd299225e9d5dc33069450c1410f64be1b",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}