{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0x6a2e77bbae5c34d3064935e6e75bb72164a5538fc6d4869e6b7dd8c91f9ea7ff",
    "signature": "0xb56d76b0b00c1eda51c3bd86feb6ef25aec4ef2e20dd16fe76894effe6fb12315ac860ce9913097c805e16e59ec9d540a974638cb4e5f3297f27e452102b082a1c",
    "signer": "0xF5C198A035503518a579b15Fb9eE834F3b4b1bAB",
    "userId": "765691673"
  }
}